hi if the red bit has snapped you need to use a bolt like the ones you use for brake mounts what you need to do is take your lever off take it all apart, pull the red bit off with some plyers then there will be a tube with threds, push it out of the lever, get a bolt and scew it in and that will push the snapped bolt out now you use the bolt as the TPA put it all back together right and it will work but remember it works backwards now so it make brake better turn left not right hope i helped paul bell p.s if you dont understand i can take some pics tomorrow of it.